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→Investigation 5: How do we turn system services on and off?
#Where do the links link to?
#Run the menu option <code>System>Administration>Services</code>. You will then see the Service Configuration screen.
#Find the <code>isdnbluetooth</code> service and select customize from the tool bar. and deselect the checkbox for your runlevel from step 1. Quit the app.
#Return to the terminal window you used in Step 2. Get a listing of the symbolic links in the startup directory. Is it any different from what you observed previously?
#Using the Service Configuration screen, re-enable the <code>isdnbluetooth</code> service.
#Check the symbolic links again. What has changed this time?
#Run this command:
#*<code>chkconfig isdn bluetooth off</code>
#Now what has changed in the directory?
#Run this command:
#*<code>chkconfig isdn blutooth on</code>
#Now what has changed?
#Run the command:
#*<code>chkconfig --level 4 httpd off</code>
#To increase your computer's security, make sure these services are disabled:
#*anacron, bluetooth, cups, irda, irqbalance, isdn, mdmonitor, netfs, nfs, nfslock, pcscd, rpcgssd, rpcidmapd, rpcsvcgssd, sendmail, ypbind.
{{Admon/note|Carefull|You should understand that while most services in this list are often not needed, or are needed under circumstances different than those which occur here, there may be situations in which some of them are required, and it may be up to you as an administrator to determine which services are needed, and which should be turned off.}}
